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I-Chess. Large board variant that adds two more piece types: the wolf and the eagle.[All Comments] [Add Comment or Rating]
Greg Strong wrote on Thu, Oct 8, 2020 05:36 PM UTC in reply to H. G. Muller from 05:32 PM:

But that is a pretty big IF, I would say...

Agreed.  I must admit I am skeptical...

And it might actually make it illegal to publish the game here at all.

I think this could make it illegal to play the game here, but descriptions of patented inventions are generally public.  And, just because a patent office has issued a patent, it does not mean that the patent would stand up in court. Personally, I very much doubt a patent of any chess variant would stand up to legal scrutiny.